With the Color values option, you can display the color values for red, green and blue in addition to the determined color name.
It can be of help to people who cannot see and name all colors (color ametropia, color blindness).
For each color you select in the color slider, the color name is determined and displayed.
The app determines the name of a color using the color information of a photo or the setting of a color slider.
The most common form of color vision deficiency is the inability to distinguish between the colors red and green, i.e. red-green blindness.